Answer:
In centralized method, the authorized sender is known, but the transmission line is dominated by the control station, while in decentralized method, one station can not dominate the line but collision on the transmission line may occur.
Explanation:
Centralized method of communication requires for a control station to manage the activities if other stations in the network. It assigns turns to one known station at a time, for transmission.
Decentralized method allows stations in a network to negotiate and take turns in transmitting data. When a station is done with the transmission line, another station on the queue immediately claims the line.
Answer: Even though the hardware is inexpensive the writing of program is not efficient through this method as proper development of program is necessary for the clear execution due to factors like:-
- The facility of writing program even the cost of hardware is less but it is not a free facility.
- It also has a slower processing for the execution of the program
- The construction of the efficient program is necessary for the compilation and execution of it rather than poorly constructed program is worthless and inefficient in working.
Answer:

Explanation:
Given
Power at point A = 100W
Power at point B = 90W
Required
Determine the attenuation in decibels
Attenuation is calculated using the following formula

Where
t and
t


Substitute these values in the given formula




<em>(Approximated)</em>
She would use Ctrl and C bc thats the copy short cut
Ctrl and v is pasting
Ctrl and a is selecting all text and
Ctrl and z is for cutting the text